Geo vs Helio

Front

What is the Geocentric model?

Back

The Geocentric model is an astronomical theory that places the Earth at the center of the universe, with all other celestial bodies orbiting around it.

Front

What is the Heliocentric model?

Back

The Heliocentric model is an astronomical theory that places the Sun at the center of the solar system, with the Earth and other planets orbiting around it.

Front

What does 'geo-' mean?

Back

Earth.

Front

What does 'helio-' mean?

Back

Sun.

Front

What is Aphelion?

Back

Aphelion is the point in the orbit of a planet where it is farthest from the Sun.

Front

What is Perihelion?

Back

Perihelion is the point in the orbit of a planet where it is closest to the Sun.

Front

Why did people believe in the Geocentric model for so long?

Back

People believed in the Geocentric model because it had been around for a long time, people are resistant to change, and there wasn't enough proof to support the Heliocentric model.

Front

What is the main difference between the Geocentric and Heliocentric models?

Back

The main difference is the position of the Earth and Sun; the Geocentric model places Earth at the center, while the Heliocentric model places the Sun at the center.

Front

Who proposed the Heliocentric model?

Back

Nicolaus Copernicus.

Front

What evidence supports the Heliocentric model?

Back

Observations of planetary motion, phases of Venus, and the retrograde motion of planets support the Heliocentric model.